Air pipe and thin-wall shell laser welding tool

The utility model belongs to the technical field of laser welding, and particularly discloses an air pipe and thin-wall shell laser welding tool which comprises a coaxial base, a circular pressing plate, a pressing bolt and a tin wire bent pipe. The coaxial base, the circular pressing plate and the compression bolt are arranged on the same axis. The thin-wall shell is installed and positioned on the coaxial base, then the air pipe penetrates through the first through hole and then is installed in the installation channel, the centering state of the air pipe on the coaxial base can be directly and visually detected from the outside, the gap limiting plane is arranged on the coaxial base, and therefore the air pipe is accurately and stably positioned, positioning deviation is not prone to occurring, and the positioning accuracy is improved. The coaxial base is not prone to positioning failure, perpendicularity out-of-tolerance of welding of the air pipe relative to the thin-wall shell is further guaranteed, a s